Table 1.

PICOS1 criteria for inclusion in the review and search terms.

Parameter	Inclusion Criteria
Participants	Human
Intervention or exposure	Consumption of milk, yogurt, cheese, or other dairy products
Comparator(s)	–
Outcome	Sleep
Study type	Observational study, intervention study
#1. milk [title/abstract]	#6. sleep [title/abstract]
#2. yogurt [title/abstract]	#7. human [text word]
#3. “dairy product” [title/abstract]	#8. “observational study” [text word]
#4. cheese [title/abstract]	#9. #5 and #6 and #7 and #8
#5. #1 or #2 or #3 or #4

1 PICOS = participant, intervention, comparator, outcome, study type.